Patents by Inventor Antonius Everardus Theodorus Ramaker

Antonius Everardus Theodorus Ramaker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and circuit for controlling an LED load
    Patent number: 9706612
    Abstract: The invention relates to a method for controlling an LED load. First an input voltage is supplied to an inductive element. Subsequently, a current is drawn through the inductive element for a first predetermined time period. Finally, a current is supplied from the inductive element to a first terminal of the LED load during a second time period. The first predetermined time is controlled to maintain a predetermined average current through the LED load.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: July 11, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventor: Antonius Everardus Theodorus Ramaker
  • METHOD AND CIRCUIT FOR CONTROLLING AN LED LOAD
    Publication number: 20110148313
    Abstract: The invention relates to a method for controlling an LED load. First an input voltage is supplied to an inductive element. Subsequently, a current is drawn through the inductive element for a first predetermined time period. Finally, a current is supplied from the inductive element to a first terminal of the LED load during a second time period. The first predetermined time is controlled to maintain a predetermined average current through the LED load.
    Type: Application
    Filed: August 28, 2009
    Publication date: June 23, 2011
    Applicant: LEMNIS LIGHTING PATENT HOLDING B.V.
    Inventor: Antonius Everardus Theodorus Ramaker